so when i got my first car it came with a system in it and i still have the sub box sitting in my room, no longer drive the car, i was maybe gunna use it or give it to a friend, but i dont know what it is tuned too...its not a prefab, and it has very good build quality so prob from a good shop..i dunno, the dimensions are 24x16x15.5=2.643 cuft, there are two ports that are 4 inches in diameter and 9 inches long each...thanks for the help